jslice,
I don't know how you can purchase the X version, but maybe there are some 'leftovers' in the store.
Then the hardest bit of your post: for $29 you have a really good editing program, (only the gimp will be cheaper I think)., so no argument about that.
Since you develop RAW outside Paintshop, that leaves only the point about the file browser. For me thats an important issue, but maybe your working habits are different.
If you go for the XI version, be sure to get the
Easy filter plugin for handling curves: it is much better than the integrated XI version, and it is free!